1. Alexandrov,W.A.: Transplacental blastomogenic action of N-nitroso-methylurea on rat offspring. Waprossi Onkol. 15, 55?61 (1969).
2. Bosch,D.A., Gerritts,P.O., Bbels,E.J.: The cytotoxic effect of ethylnitrosourea and methylnitrosourea on the nervous system of the rat at different stages of development. Z. Krebsforsch. 77, 308?318 (1972).
3. Bosch,D.A., Ipema,A., Ebels,E.J.: Different cytotoxic effects of methyl- and ethylnitrosourea on developing rat tissues and the influence of cycloheximide on cell death. Z. Krebsforsch. 78 (1973) (im Druck).
4. Druckrey,H.: Genotypes and phenotypes of ten inbred strains of BD-rats. Arzneim. Forsch. 21, 1274?1278 (1971).
5. Druckrey,H.: Organospecific carcinogenesis in the digestive tract. In: Nakahara,W., Takayama,S., Sugimura,T., Odashima,S. (Eds.): Topics in chemical carcinogenesis,p. 73?101. Tokyo: University Press 1973.